Răspunsuri

  • Utilizator Brainly
2014-02-19T17:37:50+02:00
X/3=y/5=z/9=k ⇒ x=3k, y=5k, z=9k
Inlocuim in xy+yz+zx=15k²+45k²+27k²=87k²=1392 ⇒ k=4
x=3k=12, y=5k=20, z=9k=36